ARM: dts: msm: Change app load address and size for SDM429W

For low memory devices TZ reduce size to get more memory, it change the
memory map and should change the address of app loading in kernel accordingly.

Change-Id: I3dde1f6d65929edcdf75fde9d067fba49c2e2c7a
Signed-off-by: Shaoqi Li <shaoli@codeaurora.org>
(cherry picked from commit 9258631940d5d2b50486d9dc62a7ce4a1bec08fb)
Signed-off-by: Albert I <kras@raphielgang.org>